From Bytown, Ottawa, Ontario, the two men linked with making these Ukuleles are Joel Jacques and Mark Rodgers. Joel is a former cabinet maker so possibly the main luthier? They make all scales of Ukulele from Sopranino through to Baritone plus Banjoleles and Resonator models; I've not seen any extra string examples though.

Kevin Hall - Timberline

Kevin started learning luthiery in 1969 and over the years he has been a Martin Guitars warranty operator and a partner in a 70s firm called Ruby Banjos. In 1978 he left this and set up his own shop Timberline in Wilno, Ontario, (the later Timberline Guitars in California. was a separate company but to avoid legal stuff Kevin became a consultant for them), He makes mainly Guitars but has made a few Soprano and Concert Ukuleles based on the Martin designs. In 2009 he said he has largely retired but still made 4 or 5 guitars a year

From Ontario, he is self taught, started making Ukuleles around 2008 after retirement and likes to make unusual shaped Ukuleles, often based on old medieval shapes in Concert, Tenor or Baritone scale. Since 2011 he has concentrated much more on making jewellery so makes far fewer instruments now.